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Fukui Y, Saito M, Nakamura N, Mizuno T, Sato S, Tsukuda M, Nakaoka S, Tsuboi K, Sasaki A, Kuramochi K, Boonyaritthongchai P, Kaewmanee N, Thirapanmethee K, Chomnawang MT, Bongcheewin B, Nguyen TL, Nguyen HLT, Le HT, Okamoto S, Nakamura T, Nakamura Y, Kubo N. Classification of Southeast Asian mints ( Mentha spp.) based on simple sequence repeat markers. Breed Sci 2022; 72:181-187. [PMID: 36275937 PMCID: PMC9522532 DOI: 10.1270/jsbbs.21058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 01/21/2022] [Indexed: 06/16/2023]
Abstract
Mentha is a complex genus encompassing many species as a consequence of their interspecific hybridization and polyploidy. Southeast Asian mints have been poorly distinguished though they are widely used for culinary and medical purposes. In this study, we have analyzed Southeast Asian mints and known varieties as well as a related Lamiaceae species (Nepeta sp.) using simple sequence repeat (SSR) markers and leaf morphology. Two types of mints were clearly distinguished based on their venation pattern and leaf shape index. We developed 12 SSR markers that allowed good amplification in the Mentha and another Lamiaceae species. In the SSR-based phylogram, the Mentha lines could be delimited into groups I-VI. The Southeast Asian mints divided into groups I and II, and the phylogram separated most of the available species, with groups I and II containing the known species M. × cordifolia and M. arvensis, respectively. The separation of the two groups was supported by a population structure analysis. The SSR markers developed in this study enabled the simultaneous classification of mints and will help improve our understanding of the genetic composition of known mint varieties and as yet unclassified Southeast Asian mints.
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Affiliation(s)
- Yuri Fukui
- Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-cho, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
| | - Moeko Saito
- Faculty of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-cho, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
| | - Natsuno Nakamura
- Faculty of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-cho, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
| | - Taichi Mizuno
- Faculty of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-cho, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
| | - Shuichi Sato
- Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-cho, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
| | - Mayu Tsukuda
- Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-cho, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
| | - Saori Nakaoka
- Faculty of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-cho, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
| | - Keita Tsuboi
- Faculty of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-cho, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
| | - Azusa Sasaki
- Faculty of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-cho, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
| | - Kouji Kuramochi
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Panida Boonyaritthongchai
- School of Bioresources and Technology, King Mongkut’s University of Technology Thonburi, Bangkhuntien, Bangkok 10150, Thailand
| | - Nichapat Kaewmanee
- School of Bioresources and Technology, King Mongkut’s University of Technology Thonburi, Bangkhuntien, Bangkok 10150, Thailand
| | - Krit Thirapanmethee
- Department of Microbiology, Faculty of Pharmacy, Mahidol University, 447 Sri-Ayuthaya, Rajathevi, Bangkok 10400, Thailand
| | - Mullika Traidej Chomnawang
- Department of Microbiology, Faculty of Pharmacy, Mahidol University, 447 Sri-Ayuthaya, Rajathevi, Bangkok 10400, Thailand
| | - Bhanubong Bongcheewin
- Department of Pharmaceutical Botany, Faculty of Pharmacy, Mahidol University, 447 Sri-Ayuthaya, Rajathevi, Bangkok 10400, Thailand
| | - Thuy Linh Nguyen
- Institute for Preventive Medicine and Public Health and Hanoi Medical University Hospital, Hanoi Medical University, 1 Ton That Tung, Dong Da, Hanoi 116001, Vietnam
| | - Huong Lan Thi Nguyen
- Institute for Preventive Medicine and Public Health and Hanoi Medical University Hospital, Hanoi Medical University, 1 Ton That Tung, Dong Da, Hanoi 116001, Vietnam
| | - Huong Thi Le
- Institute for Preventive Medicine and Public Health and Hanoi Medical University Hospital, Hanoi Medical University, 1 Ton That Tung, Dong Da, Hanoi 116001, Vietnam
| | - Shigehisa Okamoto
- Department of Food Science and Biotechnology, Faculty of Agriculture, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan
| | - Takako Nakamura
- Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-cho, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
- Faculty of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-cho, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
| | - Yasushi Nakamura
- Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-cho, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
- Faculty of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-cho, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
- Planning Office, Kyoto Prefectural Agriculture, Forestry and Fisheries Technology Center, 9 Wakunari, Amarube-cho, Kameoka, Kyoto 621-0806, Japan
| | - Nakao Kubo
- Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-cho, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
- Faculty of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-cho, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
- Biotechnology Research Department, Kyoto Prefectural Agriculture, Forestry and Fisheries Technology Center, 74 Oji, Kitainayazuma, Seika-cho, Soraku-gun, Kyoto 619-0244, Japan
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Sekino Y, Okumura T, Fukumitsu N, Iizumi T, Miyauchi D, Mizoguchi N, Murofushi K, Ohnishi K, Mizumoto M, Nonaka T, Nakai K, Ishikawa H, Tsuboi K, Sakurai H. EP-1420 Utility of FIB-4 index for hepatocellular carcinoma patients treated with proton beam therapy. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31840-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Wang Y, Sun L, Li X, Tsuboi K. Effect of a combined treatment with iPS cells derived dendritic cells and proton beam irradiation in a murine subcutaneous melanoma model. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy303.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Hiroshima Y, Fukumitsu N, Ishida T, Nakamura M, Shimizu S, Sekino Y, Miyauchi D, Iizumi T, Miura K, Kanuma R, Tanaka K, Saito T, Takizawa D, Numajiri H, Onishi K, Mizumoto M, Aihara T, Ishikawa H, Okumura T, Tsuboi K, Sakurai H. PO-0770: Concurrent chemoradiotherapy using photon and proton for locally advanced pancreatic cancer. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31080-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Tokuda E, Komatsu T, Sasaki S, Tsuboi K, Nakamura M, Iida M, Niwa T, Saito M, Hayashi SI. Abstract P4-03-12: Effects of PI3K inhibitors on endocrine-resistant cell lines and differences in the characteristics of ER positive breast cancer cells after acquired resistance to the inhibitors. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p4-03-12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background
Mutations in phosphatidylinositol 3-kinase (PI3K), which encodes the catalytic subunit of PI3Kα, is one of the most frequent genomic alterations and is found in about 40% of estrogen receptor (ER)-positive, HER2 negative breast cancers. PIK3CA mutations promote the growth and proliferation of cancers via activation of the PI3K/mammalian target of rapamycin pathway and can mediate resistance to endocrine therapies in breast cancer. Although several clinical trials for PI3K inhibitors (PI3Kis) in ER-positive metastatic breast cancers are ongoing, the effects of PI3Kis on endocrine-resistant breast cancers with various characteristics and definitive biomarkers of PI3Kis are unclear. Using endocrine-resistant cells established in our laboratory, we evaluated the efficacy of PI3Ki in these cell lines and identified the characteristics associated with acquired resistance to PI3Kis in endocrine-resistant cells.
Results
Long-term estrogen deprivation-resistant (EDR) cell lines and fulvestrant-resistant cell lines (MFR and TFR) were established from MCF-7 and T-47D cells in our previous studies. These cell lines showed different ER expression levels, including high expression (EDR-1), low expression (EDR-2, -3), or no expression (MFR, TFR); all of these cell lines had the same PIK3CA mutations as the parental cell lines. The pan-class1 PI3Ki buparlisib (BKM120) and α-specific PI3K inhibitor alpelisib (BYL719) inhibited the proliferation of endocrine-resistant cell lines when compared with their parental cells. Among endocrine-resistant cells, MFR cells were dramatically inhibited by PI3Kis. Colony formation assays indicated that MFR cells were more sensitive to PI3Kis than other cells lines. Next, we established PI3Ki- and everolimus-resistant cell lines from EDR-1, EDR-2, and MFR cells using BKM120, BYL719, and everolimus. Analysis of the time required to generate resistant cells showed that MFR cells required twice as long to acquire resistance compared with EDR cells. Furthermore, the time required to acquire resistance to BYL719 was shorter than that for BKM120. BYL719-resistant (BYL-R) cells were effectively inhibited by BKM120 to a degree similar to that of parental cells; however, BYL-R cells lost sensitivity to BYL719 and everolimus. Evelolimus-resistant (EVE-R) cells were also the same. In contrast, BKM120-resistant (BKM-R) cells showed less sensitivity to BKM120, BYL719, and everolimus. In other words, the pan-PI3Ki BKM120 was able to inhibit the growth of BYL-R and EVE-R cells, whereas BYL719 and everolimus were not able to inhibit BKM-R cells sufficiently. In addition, there were no changes in ER expression in EDR-1, EDR-2, and MFR cells exposed to PI3Kis for 1 h. Interestingly, ER expression on EDR-2 cells with acquired resistance to PI3Kis was increased compared with that in parental cells.
Conclusion
Our findings showed that PI3Kis exhibited remarkable efficacy in all types of EDR cells, particularly in fulvestrant-resistant cell lines. In PI3Ki- and everolimus-resistant cell lines, BKM120 and BYL719 showed different effects, and BYL719 and everolimus may exhibit cross-resistance. Furthermore, PI3Kis were likely to change the expression of ER.
Citation Format: Tokuda E, Komatsu T, Sasaki S, Tsuboi K, Nakamura M, Iida M, Niwa T, Saito M, Hayashi S-I. Effects of PI3K inhibitors on endocrine-resistant cell lines and differences in the characteristics of ER positive breast cancer cells after acquired resistance to the inhibitors [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P4-03-12.
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Affiliation(s)
- E Tokuda
- Tohoku University Graduate School of Medicine, Sendai, Japan; Juntendo University Hospital, Tokyo, Japan
| | - T Komatsu
- Tohoku University Graduate School of Medicine, Sendai, Japan; Juntendo University Hospital, Tokyo, Japan
| | - S Sasaki
- Tohoku University Graduate School of Medicine, Sendai, Japan; Juntendo University Hospital, Tokyo, Japan
| | - K Tsuboi
- Tohoku University Graduate School of Medicine, Sendai, Japan; Juntendo University Hospital, Tokyo, Japan
| | - M Nakamura
- Tohoku University Graduate School of Medicine, Sendai, Japan; Juntendo University Hospital, Tokyo, Japan
| | - M Iida
- Tohoku University Graduate School of Medicine, Sendai, Japan; Juntendo University Hospital, Tokyo, Japan
| | - T Niwa
- Tohoku University Graduate School of Medicine, Sendai, Japan; Juntendo University Hospital, Tokyo, Japan
| | - M Saito
- Tohoku University Graduate School of Medicine, Sendai, Japan; Juntendo University Hospital, Tokyo, Japan
| | - S-I Hayashi
- Tohoku University Graduate School of Medicine, Sendai, Japan; Juntendo University Hospital, Tokyo, Japan
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Nakai K, Tsuboi K. Analysis of choroidal folds in acute Vogt-Koyanagi-Harada disease using high- penetration optical coherence tomography. Acta Ophthalmol 2016. [DOI: 10.1111/j.1755-3768.2016.0271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Abstract
Fabry's disease, a disorder affecting the gene for the lysosomal enzyme α-galactosidase A (α-GAL A), can cause accumulation of globotriaosylceramide (GL-3) in the vascular endothelial cells. Symptoms include pain, angiokeratoma, corneal clouding, and damage to the heart and kidneys. Human recombinant α-GAL A for use as an enzyme replacement therapy was launched in Japan in April 2004. Eleven ambulatory patients with Fabry's disease were given replacement α-GAL A therapy. Three patients died due to factors associated with Fabry's disease. The enzyme replacement therapies in the remaining eight patients continued safely without any notable adverse events. The following were observed: a lowering of the plasma levels of GL-3 in seven cases, an improvement in the daily activities in six cases, and a reduction in corneal clouding in three cases. Although careful observation is necessary, these results suggest that replacement α-GAL A therapy may be a safe and effective treatment of Fabry's disease.
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Affiliation(s)
- K Tsuboi
- Department of Haematology, Nagoya Central Hospital, Nagoya, Japan.
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8
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Ohnishi K, Okumura T, Ishikawa H, Oshiro Y, Mizumoto M, Murofushi K, Numajiri H, Fukumitsu N, Aihara T, Tsuboi K, Sakurai H. High Dose (74 GyE) Proton Beam Therapy With Concurrent Chemotherapy for Stage III Non-Small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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9
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Oshiro Y, Masashi M, Okumura T, Fukuda K, Fukumitsu N, Abei M, Ishikawa H, Tsuboi K, Sakae T, Sakurai H. PO-0693: Analysis of repeated proton beam therapy for patients with hepatocelular carcinoma. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)40685-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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Mizumoto M, Yamamoto T, Okumura T, Numajiri H, Murofushu K, Ohnishi K, Fukumitsu N, Ishikawa H, Sakurai H, Tsuboi K. PO-0797: Hyperfractionated concomitant boost proton radiotherapy for supratentorial glioblastoma multiforme. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)40789-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Okumura T, Fukumitsu N, Mizumoto M, Ishikawa H, Ohnishi K, Murofushi K, Numajiri H, Fukuda K, Abei M, Aihara T, Sakae T, Tsuboi K. PO-0704: Proton beam therapy for hepatocellular carcinoma with extensive portal vein tumor thrombosis. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)40696-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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12
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Mizumoto M, Oshiro Y, Okumura T, Fukumitsu N, Ishikawa H, Ohnishi K, Numajiri H, Aihara T, Tsuboi K, Sakurai H. PO-0720: Association between life prognosis and pretreatment ICG 15 for the patients with HCC treated by proton beam therapy. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)30838-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Shimizu S, Shinoda N, Tsuboi K, Somura F, Okamoto R, Okumura T, Maeda K, Kureishi Bando Y, Murohara T. Enzyme replacement therapy reverses endothelial dysfunction in Fabry disease. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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14
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Mizumoto M, Okumura T, Ishikawa E, Yamamoto T, Takano S, Matsumura A, Oshiro Y, Ishikawa H, Sakurai H, Tsuboi K. Reirradiation for recurrent malignant brain tumor with radiotherapy or proton beam therapy. Strahlenther Onkol 2013; 189:656-63. [DOI: 10.1007/s00066-013-0390-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Accepted: 05/22/2013] [Indexed: 10/26/2022]
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Abstract
The etiology of achalasia is believed to be the neuropathy associated with chronic inflammation of the nerve plexus, but the cause of plexus inflammation is unknown. The purpose of this study was to evaluate the pathophysiology of achalasia by examining the muscularis externa of the esophagus. We used the muscularis externa of the esophagus of 62 patients with achalasia (median 44 years, male : female 32:30) who underwent surgical treatment (achalasia group) and of 10 patients (median 65.5 years, male : female 9:1) who underwent esophagectomy for thoracic esophageal cancer (control group) to perform immunohistochemical staining with S-100, CD43, c-kit (CD117), n-NOS, vasoactive intestinal polypeptide (VIP), and ubiquitin. The cell counts that were positive for S-100, n-NOS, VIP, and ubiquitin were significantly lower in the achalasia group compared with the control group (P < 0.001, P= 0.001, P < 0.001, and P= 0.001, respectively). There were no statistically significant differences with respect to CD43 and c-kit staining (P= 0.586 and P= 0.209, respectively). In conclusion, the pathophysiology of achalasia is therefore considered to be an impaired production of NO and VIP, which both affect interstitial cell of Cajal and smooth muscles, and this impairment is therefore considered to play a role in the pathophysiology of achalasia.
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Affiliation(s)
- M Hoshino
- Department of Surgery, Jikei University School of Medicine, 3-19-18 Nishishinbashi, Minato-ku, Tokyo, Japan.
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Doi H, Kamikonya N, Takada Y, Niwa Y, Fujiwara M, Tsuboi K, Miura H, Inoue H, Tanooka M, Nakamura T, Shikata T, Kimura T, Tsujimura T, Hirota S. Low-Dose Aspirin Therapy Does not Increase the Severity of Acute Radiation Proctitis. World J Oncol 2012; 3:173-181. [PMID: 29147301 PMCID: PMC5649840 DOI: 10.4021/wjon559w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/10/2012] [Indexed: 02/02/2023] Open
Abstract
Background Although anticoagulation therapy is commonly used in the prostate cancer population, there are only a few studies about the correlation between radiation proctitis and anticoagulation therapy. The purpose of the present study was to determine whether low-dose aspirin increases the severity of acute radiation proctitis in an experimental animal model. Methods Wistar rats were used in the present study. The rats were administered either aspirin at doses of 5, 10, and 20 mg/kg, or saline, daily before and after irradiation. The rats were irradiated to the rectum as a single fraction of 25 Gy. The rectal mucosal changes of each rat were evaluated macroscopically and pathologically on the tenth day following irradiation. The findings of proctitis were graded from 0 to 4, and then were compared with regard to the status. Results No apparent correlations were observed between the administration of aspirin and the severity of radiation proctitis in the macroscopic findings and in the morphological mucosal damage in the pathological examination. The proportion of rats with a severe degree of mucosal inflammation was 90.0%, 100.0%, 16.7% and 100.0% at 5 mg/kg, 10 mg/kg, and 20 mg/kg of aspirin, or saline, respectively. The rats receiving aspirin at the dose of 20 mg/kg showed significantly milder inflammation than the other groups (P < 0.05). Conclusions In the present study, low-dose aspirin did not increase the severity of acute radiation proctitis. In addition, aspirin might decrease the severity of radiation-induced mucosal inflammation in the rectum.
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Affiliation(s)
- Hiroshi Doi
- Department of Radiology, Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya City, Hyogo, Japan
| | - Norihiko Kamikonya
- Department of Radiology, Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya City, Hyogo, Japan
| | - Yasuhiro Takada
- Department of Radiology, Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya City, Hyogo, Japan
| | - Yasue Niwa
- Department of Radiology, Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya City, Hyogo, Japan
| | - Masayuki Fujiwara
- Department of Radiology, Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya City, Hyogo, Japan
| | - Keita Tsuboi
- Department of Radiology, Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya City, Hyogo, Japan
| | - Hideharu Miura
- Department of Radiology, Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya City, Hyogo, Japan
| | - Hiroyuki Inoue
- Department of Clinical Radiology, The Hospital of Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya City, Hyogo, Japan
| | - Masao Tanooka
- Department of Radiology, Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya City, Hyogo, Japan
| | - Takeshi Nakamura
- Department of Pharmacy, The Hospital of Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya City, Hyogo, Japan
| | - Toshiyuki Shikata
- Department of Pharmacy, The Hospital of Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya City, Hyogo, Japan
| | - Takeshi Kimura
- Department of Pharmacy, The Hospital of Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya City, Hyogo, Japan
| | - Tohru Tsujimura
- Department of Pathology, Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya City, Hyogo, Japan
| | - Shozo Hirota
- Department of Radiology, Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya City, Hyogo, Japan
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Mizumoto M, Okumura T, Hashimoto T, Ishikawa H, Oshiro Y, Ohkawa A, Kanemoto A, Hashii H, Tsuboi K, Sakurai H. EP-1069 ASSOCIATION BETWEEN LIFE PROGNOSIS AND PRETREATMENT LIVER FUNCTION OF PROTON BEAM THERAPY FOR THE PATIENTS WITH HCC. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)71402-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Abstract
Malignant gliomas are characterized by their invasiveness and angiogenesis, which are mediated by metalloproteinases (MMPs). In this study, localization of gelatinase activities in six cases of glioblastoma, two cases of anaplastic astrocytoma, and six cases of low-grade astrocytomas was investigated by film in situ zymography (FIZ). FIZ is a novel technique, because it allows preservation of tissue structure with gelatinolytic activity and can detect net MMP activity in tumor tissues. In malignant gliomas, gelatinolytic activities were extensively localized in the vessel walls in the viable tumor areas and peritumoral areas as well as the tumor cell itself. These findings suggest that FIZ is a useful tool not only to detect tumor net MMP activities but also to detect angiogenic features in the invading front of malignant gliomas.
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Affiliation(s)
- S Takano
- Department of Neurosurgery, Institute of Clinical Medicine, University of Tsukuba, Ibaraki, Japan.
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Matsuo Y, Takahashi H, Ochi N, Tsuboi K, Funahashi H, Okada Y, Takeyama H. Cancer Cell-Derived Interleukin-1alpha Promotes HGF Secretion by Stromal Cells and Enhances Metastatic Potential in Colon Cancer Cells. J Surg Res 2012. [DOI: 10.1016/j.jss.2011.11.113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Doi H, Kamikonya N, Takada Y, Fujiwara M, Tsuboi K, Miura H, Inoue H, Tanooka M, Nakamura T, Shikata T, Kimura T, Tsujimura T, Hirota S. Long-term sequential changes of radiation proctitis and angiopathy in rats. J Radiat Res 2012; 53:217-224. [PMID: 22510594 DOI: 10.1269/jrr.11075] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The purpose of the present study was to establish an experimental rat model for late radiation proctitis, and to examine the assessment strategy for late radiation proctitis. A total of 57 Wistar rats were used. Fourty-five of the rats were exposed to selective rectal irradiation with a single fraction of 25 Gy. These rats were sacrificed at the 4(th), 12(th), 24(th), and 37(th) week following irradiation. The remaining 12 rats comprised the control group without irradiation. The rectal mucosa of each rat was evaluated macroscopically and pathologically. The number of vessels in the rectal mucosa was counted microscopically. In addition, the vascular stenosis was evaluated. In the results, the degree of clinical and macroscopic findings decreased following acute proctitis and developed later. In the pathological examination, mucosal changes and microangiopathy were followed up, as well. The absolute number of vessels in the rectum was the greatest at the 12(th) week following irradiation and was the lowest in the control group. The severity of the microangiopathy was also well evaluated. To conclude, we established an animal experimental model of late radiation proctitis, and also established an assessment strategy to evaluate objectively the severity of late radiation proctitis with focusing on microangiopathy using an animal experimental model. This model can be used as an animal experimental model of radiation-induced microangiopathy.
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Affiliation(s)
- Hiroshi Doi
- Department of Radiology, Hyogo College of Medicine, Nishinomiya City, Hyogo, 663-8501 Japan.
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Mizumoto M, Tsuboi K, Okumura T, Hashimoto T, Oshiro Y, Fukumitsu N, Hayashi Y, Ohkawa A, Sakae T, Sakurai H. Hyperfractionated Concomitant Boost Proton Radiotherapy for Supratentorial Glioblastoma Multiforme: Analysis of Long Survival Patients. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Saijo K, Tsurushima H, Tsuboi K, Nose T, Oki A, Ohno T. Recycled addition of CD4+ T cell-rich population for induction of human autologous cytotoxic T lymphocytes: A practically efficient method. Cytotechnology 2011; 34:101-10. [PMID: 19003384 DOI: 10.1023/a:1008156921001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
When CD4(+) T cell-rich population appears in theinitial trial in induction cultures of humanautologous cytotoxic T lymphocytes (CTL), the cultureresults frequently in no or weak killing activity andtherefore usually be discarded as an ;unsuccessful'CTL induction culture. However, addition of theinitial CD4(+) T cell-rich population enabledefficient induction of the autologous CTL in theensuing trials. The CTL thus generated exhibitedstronger killing activities against autologous braintumor cells and ovarian tumor cells than previouslyobserved. This simple recycling of the primed butinert CD4(+) T cell-rich population for CTLinduction will promote clinical practice of adoptiveimmunotherapy of human tumors with autologous CTL.
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Affiliation(s)
- K Saijo
- The Institute of Physical and Chemical Research (RIKEN), RIKEN Cell Bank, 3-1-1 Koyadai, Tsukuba Science City, Ibaraki, 305-0074, Japan
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Abstract
Diffuse esophageal spasm (DES) has been reported as a potential cause of dysphagia or chest pain; however, the patho-physiology of DES is unclear. The aim of this study was to examine the manometric correlates of dysphagia and chest pain in this patient population. All patients undergoing manometry at our institution are entered into a prospectively maintained database. After institutional review board approval, the database was queried to identify patients meeting criteria for DES (≥20% simultaneous waves with greater than 30 mm Hg pressure in the distal esophagus). The patient-reported symptoms and manometric data, along with the results of a 24-hour pH study (if done), were extracted for further analysis. Out of 4923 patients, 240 (4.9%) met the manometric criteria for DES. Of these, 217 patients had complete manometry data along with at least one reported symptom. Of the patients with DES, 159 (73.3%) had dysphagia or chest pain as a reported symptom. Patients reporting either dysphagia or chest pain had significantly higher lower esophageal sphincter (LES) pressure than patients without these symptoms (P= 0.007). Significant association was noted between reported dysphagia and percentage of simultaneous waves. Chest pain did not correlate with percent of simultaneous waves, mean amplitude of peristalsis, or 24-hour pH score. The origin of reported chest pain in patients with DES is not clear but may be related to higher LES pressure. Simultaneous waves were associated with reported dysphagia. Using current diagnostic criteria, the term DES has no clinical relevance.
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Affiliation(s)
- K Tsuboi
- Department of Surgery, Creighton University Medical Center, Omaha, Nebraska, USA
| | - S K Mittal
- Department of Surgery, Creighton University Medical Center, Omaha, Nebraska, USA
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Nakai K, Yamamoto T, Aiyama H, Takada T, Yoshida F, Kageji T, Kumada H, Isobe T, Endo K, Matsuda M, Tsurubuchi T, Shibata Y, Takano S, Mizumoto M, Tsuboi K, Matsumura A. Boron neutron capture therapy combined with fractionated photon irradiation for glioblastoma: a recursive partitioning analysis of BNCT patients. Appl Radiat Isot 2011; 69:1790-2. [PMID: 21565517 DOI: 10.1016/j.apradiso.2011.03.049] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2010] [Revised: 02/21/2011] [Accepted: 03/11/2011] [Indexed: 10/18/2022]
Abstract
Eight patients to received Boron Neuron Capture Therapy (BNCT) were selected from 33 newly diagnosed glioblastoma patients (NCT(+) group). Serial 42 glioblastoma patients (NCT(-) group) were treated without BNCT. The median OS of the NCT(+) group and NCT (-) group were 24.4 months and 14.9 months. In the high risk patients (RPA class V), the median OS of the NCT(+) group tended to be better than that of NCT(-) group. 50% of BNCT patients were RPA class V.
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Affiliation(s)
- K Nakai
- Department of Neurosurgery, Graduate School of Comprehensive Human Science, University of Tsukuba, Tennodai, Tsukuba, Japan.
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Doi H, Kamikonya N, Takada Y, Fujiwara M, Tsuboi K, Miura H, Inoue H, Tanooka M, Nakamura T, Shikata T, Tsujimura T, Hirota S. 914 poster LATE RECTAL TOXICITY FOLLOWING IRRADIATION IN RATS. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)71036-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Doi H, Kamikonya N, Takada Y, Fujiwara M, Tsuboi K, Inoue H, Tanooka M, Nakamura T, Shikata T, Tsujimura T, Hirota S. Efficacy of polaprezinc for acute radiation proctitis in a rat model. Int J Radiat Oncol Biol Phys 2011; 80:877-84. [PMID: 21377290 DOI: 10.1016/j.ijrobp.2011.01.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2010] [Revised: 12/24/2010] [Accepted: 01/10/2011] [Indexed: 12/31/2022]
Abstract
PURPOSE The purpose of the present study was to standardize the experimental rat model of radiation proctitis and to examine the efficacy of polaprezinc on radiation proctitis. METHODS AND MATERIALS A total of 54 female Wistar rats (5 weeks old) were used. The rats were divided into three groups: those treated with polaprezinc (PZ+), those treated with base alone, exclusive of polaprezinc (PZ-), and those treated without any medication (control). All the rats were irradiated to the rectum. Polaprezinc was prepared as an ointment. The ointment was administered rectally each day after irradiation. All rats were killed on the 10th day after irradiation. The mucosal changes were evaluated endoscopically and pathologically. The results were graded from 0 to 4 and compared according to milder or more severe status, as applicable. RESULTS According to the endoscopic findings, the proportion of mild changes in the PZ+, PZ-, and control group was 71.4%, 25.0%, and 14.3% respectively. On pathologic examination, the proportion of low-grade findings in the PZ+, PZ-, and control group was 80.0%, 58.3%, and 42.9% for mucosal damage, 85.0%, 41.7%, and 42.9% for a mild degree of inflammation, and 50.0%, 33.3%, and 4.8% for a shallow depth of inflammation, respectively. The PZ+ group tended to have milder mucosal damage than the other groups, according to all criteria used. In addition, significant differences were observed between the PZ+ and control groups regarding the endoscopic findings, degree of inflammation, and depth of inflammation. CONCLUSIONS This model was confirmed to be a useful experimental rat model for radiation proctitis. The results of the present study have demonstrated the efficacy of polaprezinc against acute radiation-induced rectal disorders using the rat model.
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Affiliation(s)
- Hiroshi Doi
- Department of Radiology, Hyogo College of Medicine, Hyogo, Japan.
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Yamamoto T, Nakai K, Nariai T, Kumada H, Okumura T, Mizumoto M, Tsuboi K, Zaboronok A, Ishikawa E, Aiyama H, Endo K, Takada T, Yoshida F, Shibata Y, Matsumura A. The status of Tsukuba BNCT trial: BPA-based boron neutron capture therapy combined with X-ray irradiation. Appl Radiat Isot 2011; 69:1817-8. [PMID: 21393005 DOI: 10.1016/j.apradiso.2011.02.013] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2010] [Revised: 01/26/2011] [Accepted: 02/08/2011] [Indexed: 11/28/2022]
Abstract
The phase II trial has been prepared to assess the effectiveness of BPA (250 mg/kg)-based NCT combined with X-ray irradiation and temozolomide (75 mg/m(2)) for the treatment of newly diagnosed GBM. BPA uptake is determined by (18)F-BPA-PET and/or (11)C-MET-PET, and a tumor with the lesion to normal ratio of 2 or more is indicated for BNCT. The maximum normal brain point dose prescribed was limited to 13.0 Gy or less. Primary end point is overall survival.
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Affiliation(s)
- T Yamamoto
- Department of Neurosurgery, Graduate School of Comprehensive Human Science, University of Tsukuba, Tennodai, Tsukuba, Japan.
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Ohkawa A, Hashimoto T, Okumura T, Abei M, Fukuda K, Mizumoto M, Oshiro Y, Sakae T, Tsuboi K, Sakurai H. Proton Beam Therapy for Intrahepatic Cholangiocarcinoma. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Muragaki Y, Maruyama T, Iseki H, Tsuboi K, Matsumura A, Yamamoto T, Matsutani M, Karasawa K, Nakazato Y, Ohno T. Phase I/IIa trial of autologous formalin-fixed tumor vaccine for newly diagnosed glioblastoma. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.2069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Oshiro Y, Aruga T, Tsuboi K, Marino K, Hara R, Sanayama Y, Itami J. Stereotactic Body Radiotherapy for Lung Tumors at the Pulmonary Hilum. Int J Radiat Oncol Biol Phys 2009. [DOI: 10.1016/j.ijrobp.2009.07.1552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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31
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Kamikonya N, Doi H, Inoue H, Tanooka M, Takada Y, Fujiwara M, Tsuboi K, Hirota S, Shikata T, Kadobayashi M. 2056 Fundamental study of polaprezinc suppositories in the prevention of acute radiation proctitis in rats. EJC Suppl 2009. [DOI: 10.1016/s1359-6349(09)70572-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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32
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Kodera Y, Ito S, Mochizuki Y, Kondo K, Koshikawa K, Suzuki N, Kojima H, Kojima T, Matsui T, Takase T, Tsuboi K, Fujiwara M, Nakao A. A phase II study of radical surgery followed by postoperative chemotherapy with S-1 for gastric carcinoma with free cancer cells in the peritoneal cavity (CCOG0301 study). Eur J Surg Oncol 2009; 35:1158-63. [PMID: 19328643 DOI: 10.1016/j.ejso.2009.03.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2008] [Revised: 01/07/2009] [Accepted: 03/05/2009] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Patients with gastric cancer who have positive cytologic results for cancer cells in peritoneal washings (CY1) have poor outcomes, even in the absence of other distant metastases. A standard treatment for such patients remains to be established. METHODS We conducted a phase II trial with the 2-year survival rate as the primary endpoint. Patients who had gastric cancer with CY1 status but no other residual disease received postoperative chemotherapy with S-1 (1M tegafur-0.4M gimestat-1M otastat potassium) at a daily dose of 80mg/m(2) for 4 weeks, followed by 2 weeks of rest. This cycle was continued until disease progression or intolerable adverse events. D2 dissection was the recommended surgical procedure; splenectomy could be omitted at the discretion of the surgeon. Accrual of 50 patients was planned, and a 2-year survival rate of more than 36% was needed to exceed the historical control. RESULTS Forty-eight patients were enrolled, among whom 47 were assessable for survival and 46 for adverse reactions. Median overall survival was 705 days, and progression-free survival was 376 days. The 2-year survival rate was 47%. Median time to treatment failure was 288 days. Neutropenia was the commonest > or = grade 3 toxicity (6 patients), and anorexia was the most frequent > or = grade 2 non-hematologic toxicity (10 patients). CONCLUSIONS Gastrectomy followed by S-1 monotherapy resulted in survival that surpassed historical data and can serve as an active control treatment for future trials in patients who have gastric cancer with CY1 status in the Far East.
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Affiliation(s)
- Y Kodera
- Department of Surgery II, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi 466-8550, Japan.
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Abstract
The purpose of this study is to assess the long-term outcomes after surgical repair of intrathoracic stomach. Prospectively collected data was retrospectively reviewed. Patients underwent a phone questionnaire 1 year postoperatively to assess gastroesophageal reflux disease-related symptoms and surgical satisfaction. In addition, objective evaluation for integrity of hiatal hernia repair was undertaken either by esophagram or endoscopy. Any recurrence was considered a failure. Forty-one patients underwent surgical repair of a large paraesophageal hernia with intrathoracic stomach during the study period. Thirty-four patients underwent a laparoscopic repair, and seven patients underwent a transthoracic repair. An antireflux procedure was performed on 28 patients, and 13 patients had only hernia reduction and hiatal closure. In the laparoscopic group, two patients required conversion to open laparotomy, as one was unable to tolerate the pneumoperitoneum, and the other had mediastinal bleeding. Thirty-eight (93%) were available for 1-year follow-up. There were three (7.8%) recurrences, one requiring emergency transabdominal repair, and the other two being asymptomatic 1-cm recurrences. All patients report a high degree of satisfaction with surgery. There is a high incidence of short esophagus in patients with intrathoracic stomach. The surgical repair is safe and durable, with high patient satisfaction at 1-year follow-up.
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Affiliation(s)
- F Yano
- Department of Surgery, Creighton University Medical Center, Omaha, Nebraska 68131-2197, USA
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Abstract
A subset of patients does not report improvement of symptoms or satisfaction after antireflux surgery. The aim of this study is to assess the effect of pre-existing depression as a factor in patient satisfaction and gastrointestinal quality of life index (GIQLI) outcomes after antireflux surgery. Patients undergoing antireflux surgery who had filled a preoperative quality of life score and had more than 1 year follow-up were included in this study. Based on available history and self-reported medication use, patients were divided in two groups: with depression (group A) and without depression (group B). Fifty-four patients with completed preoperative GIQLI questionnaire were contacted for this study; 32 (59%) patients completed the postoperative questionnaire. Seven patients (22%) had psychological disorder (group A) in the form of depression The GIQLI in groups A and B increased significantly from 64.4 +/- 17.3 and 89.6 +/- 18.6 to 88.6 +/- 23.7 (P < 0.001) and 102.2 +/- 18.6 (P = 0.02), respectively, after the surgery. There was significant improvement in the quality of life in patients after antireflux surgery based on the GIQLI assessment. This improvement was also reported in patients with history of depression.
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Affiliation(s)
- F Yano
- Department of Surgery, Creighton University Medical Center, Omaha, Nebraska 68131-2197, USA
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Moritake T, Matsumaru Y, Takigawa T, Nishizawa K, Matsumura A, Tsuboi K. Dose measurement on both patients and operators during neurointerventional procedures using photoluminescence glass dosimeters. AJNR Am J Neuroradiol 2008; 29:1910-7. [PMID: 18719037 PMCID: PMC8118939 DOI: 10.3174/ajnr.a1235] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2008] [Accepted: 06/10/2008] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Although radiation skin injuries associated with interventional radiology have been known as a critical issue, there are few reports mentioning direct measurement of the entrance skin dose (ESD). Thus, the purpose of this study was to clarify the regional distributions of ESDs in neurointervention. MATERIALS AND METHODS Using photoluminescence glass dosimeters (PLDs), we measured the ESDs in 32 patients with a median age of 61.5 years. Angiographic parameters, including exposure time, dose-area product (DAP), and the number of digital subtraction angiography (DSA) studies and frames, were recorded. The ESDs of operators were analyzed by the same method. RESULTS The maximum ESD of 28 therapeutic procedures was 1.8 +/- 1.3 Gy. Although the averaged ESD on the right temporo-occipital region was higher than that in other regions, disease-specific patterns were not observed. Statistically positive correlations were found between the maximum ESD and exposure time (r = 0.5283, P = .005), DAP (r = 0.7917, P < .001), the number of DSA studies (r = 0.5636, P = .002), and the number of DSA frames (r = 0.8583, P < .001). As for operators, ESDs to the left upper extremity were significantly higher than those to other regions. However, most of the ESDs were <0.2 mGy. Lead protective garments reduced the exposure doses to approximately one half to one tenth. CONCLUSION It was shown that the regional ESD could be measured by applying the PLD. This method should contribute to reducing the dose accumulation in patients as well as in operators.
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Affiliation(s)
- T Moritake
- RadGenomics Research Group, Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, Chiba, Japan
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Tabe Y, Mochiki E, Ando H, Ohno T, Kamiyama Y, Aihara R, Fukasawa T, Tsuboi K, Yamaguchi S, Tsutsumi S, Asao T, Kuwano H. Correlation between colonic motility and defecatory disorders after anterior resection of the rectum in canine models. Neurogastroenterol Motil 2008; 20:1174-84. [PMID: 18631160 DOI: 10.1111/j.1365-2982.2008.01152.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The objective of this study was to describe the correlation between changes in colonic motility and defecatory disorders in four experimental canine models, with an emphasis on denervation. Therefore, we constructed a model by dividing 20 healthy mongrel dogs into four groups, i.e. control, denervation, transection and anterior resection of the rectum (AR) (denervation plus transection), and focused on the correlation between colonic motility and defecatory disorders by counting the colonic migrating motor complexes (CMMCs) and colonic non-migrating motor complexes (CNMCs). Gastrointestinal and colonic contractile activities were continuously recorded on a computer with strain gauge force transducers. The dogs' feces were checked daily, and their consistency was recorded as normal, semisolid, or watery. Compared with the control group, the transection group showed elongation of the propagation time (P < 0.05), and the mean motility index of colonic contractile activity at C4 and C5 in the denervation group was greater than that in the control group (P < 0.05). The AR group showed three features of colonic motility: (i) elongation of the mean CMMC cycle (P < 0.05); (ii) shortening of the propagation time (P < 0.05); and (iii) increment of the number of CNMCs. Concerning fecal consistency, the AR group only showed watery diarrhoea. In conclusion, we revealed the existence of a correlation between defecatory disorders and changes in colonic motility. Increased knowledge among colorectal surgeons of the changes in colonic motility that occur following colorectal surgery is very important and could lead to the curtailment of defecatory disorders among patients.
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Affiliation(s)
- Y Tabe
- Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Japan.
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Hayashi Y, Tokuuye K, Kanemoto A, Ooshiro Y, Fukumitsu N, Nakayama H, Sugahara S, Oohara K, Tsuboi K. Long-Term Results of Proton Beam Therapy for Surgically Inaccessible or Residual Meningiomas. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.07.1282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Sugahara S, Tokuuye K, Kaneko M, Fukushima T, Nakayama H, Fukumitsu N, Ohara K, Tsuboi K. 1404 ORAL Proton beam therapy for children with sarcomas: The University of Tsukuba experience. EJC Suppl 2007. [DOI: 10.1016/s1359-6349(07)70743-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Tsuboi K, Ishikawa E, Yamamoto T, Takano S, Matsumura A, Ohno T. A clinical trial of autologous formalin-fixed tumor vaccine (AFTV) for patients with glioblastoma multiforme. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.2085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
2085 Background: This clinical pilot study is to investigate the safety, feasibility, plus clinical response of autologous formalin- fixed tumor vaccine (ATFV) in primary glioblastoma multiforme (GBM) patients. Methods: Eleven (8 recurrent and 3 initially treated) primary GBM patients were evaluated. AFTV was prepared from formalin-fixed tumor tissue or paraffin-embedded tissue and premixed with original adjuvant materials. A delayed-type hypersensitivity test (DTH) was performed before and after each course of ATFV treatment that comprised 3 vaccinations at a 5-site intradermal inoculation. In addition, immunohistochemical analysis of MIB-1, p53, and MHC class-I complex was performed on the tumor tissue to analyze the difference in the response to the treatment. Results: The treatment was well tolerated with only local induration and low-grade fever. Among the 11 patients, the best responses were 1 complete remission, 2 partial response, 1 no change, and 7 progressive disease. In this series, the median survival period was 7 months from the initiation of the AFTV treatment, and 3 of the 4 responders survived for more than 20 months after AFTV inoculation. DTH reactions, immunohistological analysis of p53 and MHC class-I complex, and patient status may be useful to predict the efficacy of this therapy. Conclusion: This study demonstrated that AFTV treatment is safe, feasible, and potentially beneficial. Further clinical investigation is highly desirable in order to improve the outcome of GBM patients. No significant financial relationships to disclose.
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Affiliation(s)
- K. Tsuboi
- University of Tsukuba, Tsukuba, Ibaraki, Japan; Ibaraki Prefectural Central Hospital, Tomobe, Ibaraki, Japan; Waseda University, Tokyo, Japan
| | - E. Ishikawa
- University of Tsukuba, Tsukuba, Ibaraki, Japan; Ibaraki Prefectural Central Hospital, Tomobe, Ibaraki, Japan; Waseda University, Tokyo, Japan
| | - T. Yamamoto
- University of Tsukuba, Tsukuba, Ibaraki, Japan; Ibaraki Prefectural Central Hospital, Tomobe, Ibaraki, Japan; Waseda University, Tokyo, Japan
| | - S. Takano
- University of Tsukuba, Tsukuba, Ibaraki, Japan; Ibaraki Prefectural Central Hospital, Tomobe, Ibaraki, Japan; Waseda University, Tokyo, Japan
| | - A. Matsumura
- University of Tsukuba, Tsukuba, Ibaraki, Japan; Ibaraki Prefectural Central Hospital, Tomobe, Ibaraki, Japan; Waseda University, Tokyo, Japan
| | - T. Ohno
- University of Tsukuba, Tsukuba, Ibaraki, Japan; Ibaraki Prefectural Central Hospital, Tomobe, Ibaraki, Japan; Waseda University, Tokyo, Japan
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Tanimoto H, Mukai H, Sawa Y, Matsueda H, Yonemura S, Wang T, Poon S, Wong A, Lee G, Jung JY, Kim KR, Lee MH, Lin NH, Wang JL, Ou-Yang CF, Wu CF, Akimoto H, Pochanart P, Tsuboi K, Doi H, Zellweger C, Klausen J. Direct assessment of international consistency of standards for ground-level ozone: strategy and implementation toward metrological traceability network in Asia. ACTA ACUST UNITED AC 2007; 9:1183-93. [DOI: 10.1039/b701230f] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Omura N, Kashiwagi H, Yano F, Tsuboi K, Ishibashi Y, Kawasaki N, Suzuki Y, Mitsumori N, Urashima M, Yanaga K. Prediction of recurrence after laparoscopic fundoplication for erosive reflux esophagitis based on anatomy–function–pathology (AFP) classification. Surg Endosc 2006; 21:427-30. [PMID: 17180277 DOI: 10.1007/s00464-006-9059-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2006] [Revised: 05/15/2006] [Accepted: 07/31/2006] [Indexed: 12/12/2022]
Abstract
BACKGROUND The usefulness of the anatomy-function-pathology (AFP) score was examined to evaluate its prediction of recurrence after laparoscopic fundoplication for erosive reflux esophagitis. METHODS Of the patients undergoing laparoscopic fundoplication for erosive reflux esophagitis of Los Angeles classification grade A or higher from December 1994 to December 2004, 107 who underwent preoperative barium esophagogram, pH monitoring, and endoscopy were selected as subjects. The AFP score was calculated by A, F, and P factor grades of the AFP classification. By comparing patients with and without recurrence, the usefulness of the AFP score for predicting recurrence was examined. RESULTS Reflux esophagitis recurred in seven patients. No significant difference in age, sex, or A or F factor was observed between the groups, whereas a significant difference was observed in the P factor (p = 0.008). On the other hand, the mean AFP score in the recurrence group was 16.9 +/- 5.3, whereas that in the nonrecurrence group was 8.9 +/- 5.3 (p = 0.0021). Among the patients with a score of 17 points or more (n = 23), recurrence was found in 6 patients (26%). On the other hand, among the patients with a score lower than 17 points (n = 84), recurrence was found in 1 patient, but not in the remaining 83 patients (1%). Sensitivity was thus 85.7% (95% confidence interval [CI], 42.1-99.6), and specificity was 83% (95% CI, 74.2-89.8). The positive predictive value was 26.1% (95% CI, 10.2-48.4), and the negative predictive value was 98.8% (95% CI, 93.5-99.9). Multiple logistic regression analysis was performed, and receiver operating characteristics curves were obtained. The area under the curve for the AFP score was 0.8457, whereas that for the P factor was 0.7907 (p = 0.0045), suggesting that the AFP score may more accurately predict recurrence than the P factor. CONCLUSION The AFP score may be useful for predicting postoperative recurrence. If surgery is performed when the AFP score is lower than 17 points, the likelihood of postoperative recurrence is expected to be very low.
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Affiliation(s)
- N Omura
- Department of Surgery, Jikei University School of Medicine, Nishishinbashi, Minato-ku, Tokyo, Japan.
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Kamikonya N, Takada Y, Fujiwara M, Tsuboi K, Nakao N, Nakagawa H, Tanooka M, Yamamoto E, Inoue H, Yasumasa K. 2750. Int J Radiat Oncol Biol Phys 2006. [DOI: 10.1016/j.ijrobp.2006.07.1167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Tsuboi K, Kajikawa K, Hamada N, Fujita K, Hara M, Sasabe H, Knoll W, Seki K, Ouchi Y. Reflection Spectroscopy of Merocyanine Self-assembled Monolayer on a Gold Substrate. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587259808030222] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- K. Tsuboi
- a Department of Chemistry , Graduate School of Science, Nagoya University , Furo-cho Chikusa-ku, Nagoya , 464-8602 , Japan
| | - K. Kajikawa
- a Department of Chemistry , Graduate School of Science, Nagoya University , Furo-cho Chikusa-ku, Nagoya , 464-8602 , Japan
| | - N. Hamada
- a Department of Chemistry , Graduate School of Science, Nagoya University , Furo-cho Chikusa-ku, Nagoya , 464-8602 , Japan
| | - K. Fujita
- b Frontier Research Program, The Institute of Physical and Chemical Research (RIKEN) , Hirosawa 2-1, Wako, Saitama , 351-0198 , Japan
| | - M. Hara
- b Frontier Research Program, The Institute of Physical and Chemical Research (RIKEN) , Hirosawa 2-1, Wako, Saitama , 351-0198 , Japan
| | - H. Sasabe
- b Frontier Research Program, The Institute of Physical and Chemical Research (RIKEN) , Hirosawa 2-1, Wako, Saitama , 351-0198 , Japan
| | - W. Knoll
- b Frontier Research Program, The Institute of Physical and Chemical Research (RIKEN) , Hirosawa 2-1, Wako, Saitama , 351-0198 , Japan
| | - K. Seki
- a Department of Chemistry , Graduate School of Science, Nagoya University , Furo-cho Chikusa-ku, Nagoya , 464-8602 , Japan
| | - Y. Ouchi
- a Department of Chemistry , Graduate School of Science, Nagoya University , Furo-cho Chikusa-ku, Nagoya , 464-8602 , Japan
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Hayashi K, Asahina S, Kugahara A, Watabe H, Hashizume M, Nakano K, Tsuboi K. P36.44 Research into the panic disorder with EEG abnormalities, about characteristic symptoms and findings. Clin Neurophysiol 2006. [DOI: 10.1016/j.clinph.2006.06.653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Makino M, Hashizume M, Tsuboi K, Yasushi M, Dennerstein L. Comparative study of attitudes to eating between male and female students in the People's Republic of China. Eat Weight Disord 2006; 11:111-7. [PMID: 17075237 DOI: 10.1007/bf03327555] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
OBJECTIVE This study was conducted to compare eating attitudes and lifestyles of male and female college students in China (Beijing). SUBJECTS AND METHODS The subjects of this study consisted of 217 male and 177 female college students. They were asked to fill out the Eating Attitudes Test-26 (EAT-26) and a lifestyle questionnaire. RESULTS The percentages of those above the cutoff point on the EAT-26 for abnormal eating attitudes were 4.7% of male and 6.2% of female students. Body perception of being fat (distorted body image) was the factor most associated with abnormal eating attitudes. DISCUSSION Weight related concern was prevalent amongst the Chinese students. This suggests that the culture of the beauty of thinness is common among young students in Beijing, particularly female students.
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Affiliation(s)
- M Makino
- Office for Gender and Health, Department of Psychiatry, The University of Melbourne, Melbourne, Victoria, Australia
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Makino M, Hashizume M, Yasushi M, Tsuboi K, Dennerstein L. Factors associated with abnormal eating attitudes among female college students in Japan. Arch Womens Ment Health 2006; 9:203-8. [PMID: 16625319 DOI: 10.1007/s00737-006-0128-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2005] [Accepted: 03/11/2006] [Indexed: 01/22/2023]
Abstract
OBJECTIVES To determine the prevalence rates of abnormal eating attitudes and associated risk factors among female Japanese college students. SUBJECTS AND METHODS The study population was 7812 female college students in Tokyo. They were asked to fill out the Japanese version of EAT-26 and lifestyle questionnaires. RESULTS 5.1% of the subjects had a total EAT-26 score above the cutoff point (>20). Multiple regression analysis found the most important factors associated with abnormal eating attitudes were distorted body image, fewer sleeping hours, irregular meal habits, cigarette smoking and more exercise. DISCUSSION The prevalence of abnormal eating attitudes among female college students in this study was lower than that of Japanese female high school students and lower than that reported for college students of both western and non-western countries. Our results suggest that body image dissatisfaction may be the most important factor associated with abnormal eating behavior.
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Affiliation(s)
- M Makino
- Department of Psychosomatic Medicine, Toho University, Tokyo, Japan
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Endo K, Yamamoto T, Shibata Y, Tsuboi K, Matsumura A, Kumada H, Yamamoto K, Sakai T, Sato T, Oikawa M, Ohara Y, Ishii K. Demonstration of Inter- and Intracellular Distribution of Boron and Gadolinium Using Micro-Proton-Induced X-Ray Emission (Micro-PIXE). Oncol Res 2006; 16:57-65. [PMID: 16898266 DOI: 10.3727/000000006783981198] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Micro-proton-induced X-ray emission (Micro-PIXE) was applied to determine inter- and intracellular distribution of boron (10B) and gadolinium (157Gd), the capture atoms used to kill tumor cells in neutron capture therapy (NCT). Cultured 9L gliosarcoma cells on Mylar film were exposed to sodium borocaptate (BSH) and gadobenate dimeglumine (Gd-BOPTA). To analyze the inter- and intracellular distribution of 10B and 157Gd in 9L gliosarcoma cells, the cells were irradiated using a proton beam of 1.7 or 3 MeV energy collimated to 1 microm diameter and emission X-ray was detected. The distribution of 10B and 157Gd in 9L gliosarcoma cells was then examined. In this study, we could directly analyze the inter- and intracellular distribution of 10B and 157Gd elements in 9L gliosarcoma cells directly using Micro-PIXE. This is the first report on the distribution of 10B employing a method to detect gamma-rays resulting from the nuclear reaction of 10B using particle-induced gamma-ray emission (PIGE). These results show that the distribution of 157Gd elements was correctly measured using micro-PIXE. 157Gd should have the same tendency as 10B in cultured 9L gliosarcoma cells and agree with the distribution in 9L gliosarcoma cells. Further investigation is necessary for a higher spatial resolution and optimization of the measurement time or improvement of the sampling method. In the future, it will be possible to employ this method to analyze the intracellular microdistribution of the capture element and in the development of new drugs for NCT.
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Affiliation(s)
- K Endo
- Department of Neurosurgery, Institute of Clinical Medicine, University of Tsukuba, Ibaraki, Japan.
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Omura N, Kashiwagi H, Ishibashi Y, Yano F, Tsuboi K, Kawasaki N, Suzuki Y, Yanaga K. Laparoscopic Heller myotomy and Dor fundoplication for the treatment of achalasia. Surg Endosc 2005; 20:210-3. [PMID: 16328672 DOI: 10.1007/s00464-005-0365-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2005] [Accepted: 06/16/2005] [Indexed: 11/25/2022]
Abstract
BACKGROUND The significance of laparoscopic Heller myotomy and Dor fundoplication (LHD) for the treatment of achalasia in relation to the severity of the lesion has not been sufficiently assessed. METHODS Of patients who were diagnosed with achalasia from August 1994 to February 2004, 55 individuals who underwent LHD served as subjects. The therapeutic effects of LHD were assessed in terms of operation time, intraoperative complications, postoperative hospital stay, and symptom improvement in relation to morphologic type (spindle type, Sp; flask type, Fk; and sigmoid type, Sig). Degree of symptomatic improvement was classified into four grades: excellent, good, fair, and poor. RESULTS Breakdown of morphologic type was as follows: Sp, n = 29; Fk, n = 18; and Sig, n = 8. Excluding one patient for whom conversion to open surgery was required, median average operation time for 54 patients was 160 min. As to intraoperative complications, esophageal mucosal perforation was seen in nine of the 55 patients (16%); however, conversion to open surgery could be avoided by suturing the affected area. Moreover, intraoperative bleeding of at least 100 g was seen in five of the 55 patients (9%), with one Fk patient requiring conversion to open surgery and transfusion. Median postoperative hospital stay was 8 days. Degree of dysphagia relief was excellent in 45 patients (83%), good in eight patients (15%), and fair in one patient (2%). Excellent improvement was obtained in 90%, 88%, and 50% in Sp, Fk, and Sig patients, respectively. Reflux esophagitis was seen in two patients, and was treated with a proton pump inhibitor. CONCLUSIONS The results of the present study suggest that classification of morphologic type is a useful parameter in predicting postoperative outcome in achalasia. In order to achieve excellent symptomatic relief, surgery for achalasia should be recommended for but not limited to Sp and Fk types.
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Affiliation(s)
- N Omura
- Department of Surgery, Jikei University School of Medicine, 3-25-8, Nishishinnbashi, Minato-ku, Tokyo, 105-8461, Japan.
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Tsuboi K, Kishi K, Ohmachi K, Yasuda Y, Shimizu T, Inoue H, Matsumoto M, Hattori K, Yoshiba F, Watanabe S, Ogawa Y, Kawada H, Yabe H, Yabe M, Kato S, Hotta T. Multivariate analysis of risk factors for hemorrhagic cystitis after hematopoietic stem cell transplantation. Bone Marrow Transplant 2003; 32:903-7. [PMID: 14561991 DOI: 10.1038/sj.bmt.1704240] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
To establish the most appropriate prophylactic therapy and risk factors for predicting hemorrhagic cystitis (HC) after stem cell transplantation (SCT), we retrospectively analyzed the clinical records of 450 transplant patients treated from 1982 to 2002. In all, 81 patients developed early- and/or late-onset HC (early=29, late=48, both=4). For the incidence of early-onset HC, administration of cyclophosphamide (CY) (p=0.0079, odds ratio (OD)=5.109, 95% confidence interval (CI)=1.533-17.030), busulfan (BU) (p=0.0015, OD=3.336, 95% CI=1.584-7.027), BU+CY (p=0.0001, OD=4.369, 95% CI=2.055-9.292), antithymocyte globulin (p=0.0009, OD=3.368, 95% CI=1.642-6.911), nonradiation (p=0.0163, OD=2.564, 95% CI=0.181-0.841), 2-mercaptoethane sodium sulfonate (Mesna) (p=0.0001, OD=7.519, 95% CI=2.847-19.858), and bladder irrigation (p=0.0001, OD=4.950, 95% CI=2.328-10.523) were risk factors. By Fisher's exact test, the combination of BU and Mesna was a more significant risk factor (P<0.001) than Mesna alone (p=0.008) compared to the administration of neither agent. By multivariate analysis, prophylactic administration of Mesna (p=0.0105, OD=5.301, 95% CI=1.477-19.026) and bladder irrigation (p=0.0001, OD=9.469, 95% CI=3.872-23.156) were significant risk factors of early-onset HC. We conclude that (i). high-dose BU as well as CY is a cause of HC, (ii). protective bladder irrigation has an opposite effect, and (iii). Mesna possibly has a toxic effect on bladder mucosa.
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Affiliation(s)
- K Tsuboi
- Department of Medicine, Tokai University School of Medicine, Isehara, Kanagawa, Japan
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Fujiwara M, Kamikonya N, Tsuboi K, Irie M, Misawa M, Hara H, Kai S, Nakao N. [New three-dimensional compensating filter for TBI using compu-former associated with RT LAN]. Nihon Igaku Hoshasen Gakkai Zasshi 2003; 63:399-404. [PMID: 14587409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Abstract
To shorten the TBI process, we developed a new device for making the three-dimensional (3D) compensating filter that improves dose distribution. The dose distributions in the phantom and manufacturing time were compared between the new device and the previous one. Clinical evaluations included dose distribution in patients and the clinical rate of interstitial pneumonitis (IP). Our 3D compensating filter is made of polystyrene resin and gypsum. The filter was made after performing two procedures as follows. Patient data were measured by CT, and the 3D dose-distribution data and 3D compensating-filter data were obtained from the CT data by the 3D radiation planning system. We were able to produce the new 3D compensating filter within about 4 hours, including all procedures. The average dose distribution to each site when the 3D compensating filter was used was 92.7% to the head, 102.1% to the thorax, 106.4% to the pelvis, 90.2% to the knee, and 93.8% to the ankle joint, when the scheduled dose was taken as 100%. Dose distribution was improved. IP occurred in 6 of 32 patients (18.8%). There was no significant difference between the TBI and non-TBI groups in the frequency of IP (p = 0.27).
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